Finding the Fourth Proportional to 207,939.20, 311,908.80 and 194,817.20
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Solution
The fourth proportional to 207,939.20, 311,908.80 and 194,817.20 is: 292,225.80
Step by Step Solution
- Step 1: Write the proportion equation
207,939.20 : 311,908.80 = 194,817.20 : x - Step 2: Convert to fraction form
207,939.20/311,908.80 = 194,817.20/x - Step 3: Cross multiply
207,939.20x = 311,908.80 × 194,817.20 - Step 4: Simplify right side
207,939.20x = 60,765,199,071.36 - Step 5: Solve for x
x = 60,765,199,071.36/207,939.20 - Step 6: Final answer
x = 292,225.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.